import java.math.BigDecimal;

public class PriceConverter {

    private static final String[] CHINESE_NUMBERS = {"零", "壹", "貳", "叁", "肆", "伍", "陸", "柒", "捌", "玖"};
    private static final String[] UNITS = {"", "拾", "佰", "仟"};
    private static final String[] BIG_UNITS = {"", "萬", "億", "兆", "京", "垓", "秭", "穰", "溝", "澗", "正", "載", "極"}; // 根據需要可以增加更多大單位

    public static String convertToChinese(BigDecimal price) {
        if (price == null || price.compareTo(BigDecimal.ZERO) < 0) {
            throw new IllegalArgumentException("價格不能為空或小于0");
        }

        // 轉換為字符串并截取小數點前后部分
        String priceStr = price.setScale(2, BigDecimal.ROUND_HALF_UP).toPlainString();
        String integerPart = priceStr.split("\\.")[0]; // 整數部分
        String decimalPart = priceStr.split("\\.")[1]; // 小數部分（角、分）

        // 處理整數部分
        String integerChinese = convertToChinesePart(integerPart, UNITS, BIG_UNITS);

        // 處理小數部分
        String decimalChinese = "";
        if (!"00".equals(decimalPart)) {
            decimalChinese = convertToDecimalChinese(decimalPart);
        }

        // 合并結果
        return integerChinese + "元" + decimalChinese;
    }

    private static String convertToChinesePart(String numberStr, String[] units, String[] bigUnits) {
        if ("0".equals(numberStr)) {
            return CHINESE_NUMBERS[0];
        }

        StringBuilder sb = new StringBuilder();
        int unitIndex = 0;
//        int zeroCount = 0;

        for (int i = numberStr.length() - 1; i >= 0; i--) {
            int digit = numberStr.charAt(i) - '0';
            String chineseDigit = CHINESE_NUMBERS[digit];

            if (digit == 0) {
//                zeroCount++;
                // 連續(xù)零的處理：只在非零數字后面、單位變化處或字符串開始處添加一個零
                if (sb.length() > 0 && (sb.charAt(sb.length() - 1) != CHINESE_NUMBERS[0].charAt(0) || unitIndex == 0 || i == 0)) {
                    sb.insert(0, chineseDigit);
                }
            } else {
                // 添加非零數字和對應單位
                sb.insert(0, chineseDigit + units[unitIndex]);
//                zeroCount = 0; // 重置連續(xù)零的計數
            }

            // 切換到下一個單位
            if (++unitIndex == units.length) {
                unitIndex = 0; // 循環(huán)使用單位數組
                if (sb.length() > 0 && i > 0) {
                    sb.insert(0, bigUnits[(numberStr.length()-i) / units.length]);
                }
            }
        }

        // 去除末尾可能多余的零
        while (sb.length() > 0 && sb.charAt(0) == CHINESE_NUMBERS[0].charAt(0)) {
            sb.deleteCharAt(0);
        }

        return sb.toString();
    }

    private static String convertToDecimalChinese(String decimalPart) {
        StringBuilder sb = new StringBuilder();
        if (decimalPart.charAt(0) != '0') {
            sb.append(CHINESE_NUMBERS[decimalPart.charAt(0) - '0']).append("角");
        }
        if (decimalPart.length() > 1 && decimalPart.charAt(1) != '0') {
            sb.append(CHINESE_NUMBERS[decimalPart.charAt(1) - '0']).append("分");
        }
        return sb.toString();
    }

    public static void main(String[] args) {
        System.out.println(convertToChinese(new BigDecimal("4545444444111141233123522212345.67"))); // 肆佰伍拾肆穰伍仟肆佰肆拾肆秭肆仟肆佰肆拾壹垓壹仟壹佰壹拾肆京壹仟貳佰叁拾叁兆壹仟貳佰叁拾伍億貳仟貳佰貳拾壹萬貳仟叁佰肆拾伍元陸角柒分
        System.out.println(convertToChinese(new BigDecimal("100.00"))); // 壹佰元
        System.out.println(convertToChinese(new BigDecimal("0.01"))); // 零元壹分
        System.out.println(convertToChinese(new BigDecimal("0.00"))); // 零元
    }
}

package com.ithm.stringdemo;
import java.util.Scanner;
 
public class Demo1 {
    //獲取每一個數字對應的中文大寫
    public static String getCapitalNumber(int number){
        String []capitalnumber={"零","壹","貳","叁","肆","伍","陸","柒","捌","玖"};
        return capitalnumber[number];
    }
    public static void main(String[] args) {
        //數組里面放入輸入的金額的每一位數字
        int []sz=new int[7];
        Scanner sc=new Scanner(System.in);
        int money;
       while (true){
           System.out.print("請輸入任意金額:");
           money=sc.nextInt();
           if(money>=0 ||money<=9999999) {
           break;
       }else {
               System.out.println("金額無效，請重新輸入");
           }
       }
       String capmoney="";
       int i=0;
       while (true){
           int ge=money%10;
           sz[i++]=ge;
           money=money/10;
           if(money==0) break;
       }
       //獲取大寫數字的字符串
        String capitalnumber="";
        for (int j = 0; j < sz.length; j++) {
            capitalnumber=getCapitalNumber(sz[j]);
            capmoney=capitalnumber+capmoney;
        }
        //定義一個字符串數組存放單位
        String []arr={"佰","拾","萬","仟","佰","拾","元"};
        //將大寫數字和單位數組進行字符串的拼接
        String result="";
        for (int k = 0; k < capmoney.length(); k++) {
            char c=capmoney.charAt(k);
            result=result+c+arr[k];
        }
        System.out.println(result);
    }
}